/*
 * Copyright 2023 devaper
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.github.devaper.pigeon.util

private fun normalize(path: String): String {
    if (path.lowercase().startsWith("http")) {
        return path
    }
    val v = if (path.startsWith("/")) path else "/$path"
    return if (v.endsWith("/")) v.substring(0, v.length - 1) else v
}
fun joinUrl(vararg paths: String?): String {
    if (paths.isEmpty()) return ""
    if (paths.size == 1) return if (paths[0] == null) "" else normalize(paths[0]!!)

    val builder = StringBuilder()
    for (path in paths) {
        if (!path.isNullOrEmpty()) {
            builder.append(normalize(path))
        }
    }
    return builder.toString()
}